En la escuela (D)

In order to get your frog from one side of the pond to the other, you must answer ALL twenty vocabulary questions correctly! If you answer just one question incorrectly, you must go back to the beginning. Keep playing until you make it safely to shore!

¿Qué es? - "What is this?"
¿Qué son? - "What are these?"
¿Cuál es? - "Which is?"
¿Cuáles son? - "Which are?"
¿Quién es? - "Who is this?"
¿Quiénes son? - "Who are they?"